Series 23 SY Ei / 25 Y Ei / 26 Y Ei
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Catalog excerpts

Series 23 SY Ei / 25 Y Ei / 26 Y Ei - 1

Intrinsically Safe Pressure Transmitters for gas and dust atmospheres These piezoresistive pressure transmitters with ATEX and IECEX certifications are approved for use in highly explosion risk areas of group II (gas and dust). The Y-line transmitters have an extremely small temperature error. This is achieved using an additional circuit containing a temperature sensor that subdivides the temperature range into fields that are 1,5 Kelvin (K) wide. The TK zero and TK compensation values are calculated for each field and programmed into the additional circuit. During operation, these values are fed into the analogue signal path depending on the temperature. Each temperature is the „calibration temperature” for this transmitter. The accuracy thereof is mainly determined by linearity. 120 fields are available, representing a possible temperature range of 180 K. The wider the tempe- rature range, the greater the amount of testing that is needed to minimise the inaccuracy of the mathematical model. · Series 23 SY Ei Flush, fully welded. Fully welded (no internal seals) Level Probe. Floating mounted sensor. Internal O-Ring. Series 25 Y Ei A Comprehensive Range Absolute, barometric, gauge (positive and negative pressures). Many nominal pressure ranges. Current or voltage output. Binder Plug Cable Screw Connector Usit ring Pressure Connections Electrical Connections KELLER AG für Druckmesstechnik CH-8404 Winterthur +41 52 235 25 25 info@keller-druck.com KELLER Ges. für Druckmesstechnik mbH DE-79798 Jestetten +49 7745 9214 0 eurocenter@keller-druck.com Edition 10/2017 Subject to alterations Companies approved to

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Series 23 SY Ei / 25 Y Ei / 26 Y Ei - 2

PR: Gauge Pressure PA: Absolute. Zero at 1000 mbar abs PAA: Absolute. Zero at vacuum *for 25 Y: up to 600 bar Type Signal Output Limitation Signal Output Supply Load Resistance Limiting Frequency Power Consumption Electrical Connection Pressure Connection Response Time (Supply ON) Insulation EMV Dead Volume Change Material in Media Contact Protection Weight Endurance Oil Filling Options Temperature Range Oil Filling Pressure Ranges Pressure Connection, Electrical Connection Series 26 Y Ei: Protection Cap, optional G1/4” (0.99 %) < 5 ms > 10 MO @ 300 VDC EN 61000-6-1 to -6-4 / EN...

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